Syringe



F. E. BELL ET AL SYRINGE Filed April 20. 1925 FEEDER/@K 5 BEL/ @EXHA/ems.

3% @Arm/VV 61H0: new

Patented Dec. 7, 1926.

,Unirse STATES Para NT je lice,

f sYsINeE- .Application ledilflpril 20, 192,5. f Serial N'o. 24,358.

Uur :invention relatesto syringes, particularly to curved syringes.

Heretofore longitudinally curved syringes hare been made withlongitudinally curved bores, the vbores being concentric with thecircular outlines ofthe cross-sections of the barrels. This constructionnecessitated-maliv ing .the plungerrods curved to-contforn'i Avith thecurves o the bores oi' the barrels. The plungers of. syringes olthisclass were -made oi 4'ordinary lstraight construct-ion causing poorVseating against or engagement -vv-ith the walls orming the bores of thebarrels. `With this construction also, the plungersand plimgerv rodswere required to `be positioned into the bores rin a vcertain "mannervto preventV binding of* the plunger rods againstthe 4removable heads orcaps or distortingo-the yieldable plungers and/,ofthe plunger-rods 'Theobjects of our invention are: First,

to provide a longitudinally-curved'syringe barrel .having `straight boreextending therein *from vone fendthereof and adapted to receive aplunger having a-straight plung- 25 er rod with which it may be easilyassembled and hereby the usual binding or cramping of the plunger andplunger rod in syringes olf this class is reduced to a minimum; second,to provide a syringe having a lilling opening in the wall of its barrelnear the removable cap end thereof, whereby the barrel may be ill'edWitho-ut removing the cap at the normallyV open end thereol and withoutthe provision of considerable auxiliary apparatus; third, to provide asyringe having` a filling opening in the wall of its barrel near thenormally open endY there- 0I", whereby the barrel may be readily chargedwith plastic substances Without removing the removable cap from thenormally openend of the barrel; fourth, to provide as a whole a novellyconstructed syringe, and fifth, to provide a syringe of this class whichis particularly simple and economical of construction proportionate toits functions, durable, and which will not readily deteriorate or getout oi order.

With these and other objects in view, as will appear hereinafter, ourinvention consists of cert-ain novel features of construction,combination and arrangement of parts and portions, as will behereinafter described in detail and particularly set forth in theappended claims, reference being had to the accompanying drawings-alndfto the characters of lreference--thereon, which Aform a part oi'-this application, in which:

Figure l is a fragmentary .s'i'dewiew -of oursyr-inge; lligisaylongitndinalfseetional Vview-thereof, takenthrough 2-2 of fITig. l,showing certain parts and portions thereo'' v vin elevation tofacilitate the j illustration, and Figs. 3 and 4 iare transversesectional views thereof, taken V.respectively through and 4 4 of [Fig.2.

'Like characters ofreerence-refer to similar Vparts and i portionsthroughout -the sever 2 may be of any suitable construction,A

such as a pair of oppositely disposed, cupped leather or rubber washers,as shown in Fig. 2. The externally threaded open end p0rtion of thebarrel Vl is concentric with the bore la and the rod 3, thus requiringno `particular skill in securing the cap 4 to the open end of thebarrel.

In the Wall of the barrel l and near the open end thereof is provided ailling'opening l, providing an opening at all times from the outside tothe interior of the barrel. lThis opening' lc is spaced from the openend of the barrel a distance slightly greater than the thickness 0l' theplunger 2, so that Y the barrel may be readily filled Withoutinterference. This filling opening lC permits the barrel to be lilledwithout removing theY cap 4 from the open end of the barrel, as isusually done in syringes now in use; and the opening lc provides a farsimpler means of filling the barrel Without removing the cap 4 thanother cumbersome apparatus 110W in use for this purpose. The illingopening 1 near the normally open end of the barrel also permit plasticsubstances to be discharged into the barrel from tubes, as shown bydotted lines in Fig. 2, Without removing the Cap 4.

Though We have shown and described a particular construction,combination and arrangement ot' parts and portions, We do not Wish to belimited to this particular construction, combination and arrangement,but desire to include in the scope ot our invention the construction,combination and arrangement substantially as set torth in the appendedclaims.

Having thus described our invention, what rWe claim as new and desire tosecure by Letters Patent is:

l. In a syringe structure, a longitudinally curved barrel provided witha substantially straight bore.

Q. In a syringe structure, a longitudinally Curved barrel provided witha substantially straight bore extending therein from one end thereof tonear the opposite end of said burrel and communicating With the outerside of said opposite end through a small discharge opening.

3. In a curved syringe structure, a longitudinally curved barrelprovided with a straight bore extending therein from one end thereof tonear the opposite end, a cap for the open end ot said barrel, ayieldable plunger reciprocally mounted in the bore ot said barrel, and astraight plunger rod secured to said plunger and extending through saidcap.

11. In a syringe structure, a longitudinally curved barrel provided Witha substantially straight bore extending therein trom one end thereof tonear the opposite end of said barrel and communicating with the outerside oit said opposite end through a small discharge opening, the openend of said barrel being externally threaded and concentricy with thebore of the barrel, a cap positioned over the open end ot said barrel,said cap being provided with a central hole concentric With the bore ot'the barrel, a straight, substantially rigid plunger rod extendingthrough the hole in said cap, and a plunger secured to the one end otsaid rod and reeiprocally mounted in said barrel.

5. In a syringe structure, a longitudinally curved barrel having acorresponding longitudinally curved axis and provided with a .straightbore having a discharge opening at its one end.

6. In a syringe structure, a longitudinally curved barrel having acorresponding longitudinally curved axis and provided With a sti-ighthore having a discharge opening at its one end, and a plungerreciprocally mounted Within the bore of said barrel and provided with astraight, substantially rigid plunger rod extending beyond the oppositeend ot said bore.

In testimony whereof, We have hereunto set our hands at San Diego,California,

this ath day ot April, 1925.

FREDERICK E. BELL. REX HARRIS.

